Snap hook



FIG. 1 is a top view of a snap hook showing my new design;

FIG. 2 is an end elevational view taken from the left of FIG. 3;

FIG. 3 is a side elevational view thereof, the side opposite being a mirror image;

FIG. 4 is an end elevational view taken from the right of FIG. 3;

FIG. 5 is a bottom view thereof. 

The ornamental design for a snap hook, as shown and described. 